We visited this trail last year too; starting from the Ethel Harrold Trailhead. It is pretty steep and on the way out you are going down into the valley toward the falls. Means we had to leave plenty of time and energy for the return trip. We did not get all the way to the falls themselves. Starting elevation was about 6,900ft and the bottom about 6,560ft.
Pretty good bird sightings; few photos turned out well though. I now forget, but I think we also saw a Bald Eagle circling around on this day on the way to our hike.
Northern Flicker (Red-shafted)